best time of year for transplanting trees?

When is the best time of the year for transplanting trees? I bought 4 acres this last winter, and it is heavily wooded on the back side, and none towards the front. when they put the road in, all the trees were taken down. I have a couple nice small oak trees, that I want to move to the front. (they will need to be removed for a house anyways)

Jeff,
Just for a start you could check the site below.http://www.arboristsite.com/
I hope you can learn just a little about our friends that emit more oxygen than you could ever believe.
It is not hard to move trees if you have the info. And of course water.
Looks like a great site from the photo, what type of soil do you have, how about the ph?
There are products out that help in transplanting.
Just my 2 cents
Jim